>4ylzC (C:) observed residues (from ATOM records) gpptfnppvpyfgrlqggltarrtiiikgyvpptgksfainfkvgssgdialhinprmgn gtvvrnsllngswgseekkithnpfgpgqffdlsircgldrfkvyangqhlfdfahrlsa fqrvdtleiqgdvtlsyvqi